Protozoa: Giardia spp.

Question 1

What are the names of the diseases that Giardia causes?

2

Answer 1

1. giardiasis

2. beaver fever

Question 2

Where are the motile feeding forms of giardia found and what is it called?
(2)

Answer 2

1. trophozoite

2. live in small intestine

Question 3

What form if Giardia are passed in the feces?

Answer 3

cyst form

Question 4

Why is Giardia important?

Answer 4

diarrhea

Question 5

How is Giardia diagnosed?

Answer 5

fecal direct smear with iodine

Question 6

How is Giardia transmitted?

Answer 6

ingestion of contaminated food or water

Question 7

How is Giardia treated?

Answer 7

metronidazole

Question 8

What are the human symptoms/syndrome for Giardiasis?

6

Answer 8

1. usually asymptomatic
2. nausea
3. vomiting
4. diarrhea
5. abdominal pain
6. bloating

Question 9

What are the animal symptoms/syndrome for Giardiasis?

Answer 9

1. weight loss
2. diarrhea
3. subclinical

Question 10

Where does Giardiasis occur?

Answer 10

developing countries

Question 11

How is Giardia transmitted?

Answer 11

ingestion of cysts passed in the feces of infected humans or animals

Question 12

How is Giardiasis diagnosed?

2

Answer 12

1. microscopic examination of feces for cysts

2. antigen test

Question 13

How is Giardia controlled and prevented?

3

Answer 13

1. personal hygiene
2. protect water supplies from contamination with feces
3. filter public water supplies

Question 14

How would you treat contaminated water during an emergency?

4

Answer 14

1. boil water
2. add 2-4 drops of bleach or
3. add 2% tincture of iodine to each liter of water
4. let sit for at least 20 min